function display_new(url, new_width, new_height)
{
sw = screen.width;
// sh = screen.height;
xpos =(sw-new_width)/2;
ypos = 20
// (sh-new_height)/2-20;
code='';
isNetscape=navigator.appName.indexOf('Netscape')>=0;
isExplorer=navigator.appName.indexOf('Explorer')>=0;
if (isNetscape) code='screenX='+xpos+',screenY='+ypos+',';
if (isExplorer) code='left='+xpos+',top='+ypos+',';
window.open (url,'NewImage','width='+new_width+',height='+new_height+','+code+',fullscreen=0,scrollbars=0,toolbar=0,status=0,resizable=0')
}